/ Dictionary / Index M metaphosphate: Meaning and Definition of Find definitions for: met•a•phos•phate Pronunciation: (met"u-fos'fāt), [key] — n. Chem. a salt or ester of metaphosphoric acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metaphor metaphosphoric acid Related Content Daily Word Quiz: turgid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language